CalAmp ITC 220 Wayside User manual

Brand: CalAmp

Model: ITC 220 Wayside

Type: User manual

ITC 220 Wayside Transceiver

HIGH PERFORMANCE WIRELESS FOR RAILROAD PTC

Installation Guide

PN 133981 Rev. A

Revised July 2012

REVISION HISTORY

REV

DATE

REVISION DETAILS

July 2012

Initial release. Part number 133981.

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page i

Important Notice

Because of the nature of wireless communication, transmission and reception of data can never be

guaranteed. Data may be delayed, corrupted (i.e. have errors), or be totally lost. Significant delays or losses

of data are rare when wireless devices such as CalAmp provides are used in a normal manner with a well-

constructed network. These products should not be used in situations where failure to transmit or receive

data could result in damage of any kind to the user or any other party, including but not limited to personal

injury or death, or loss of property. CalAmp accepts no responsibility for damages of any kind resulting from

delays or errors in data transmitted or received using the ITC 220 Base Station, Locomotive, or Wayside

Transceiver, or for failure to transmit or receive such data.

Products offered may contain software proprietary to CalAmp or other parties. The offer of supply of these

products and services does not include or infer any transfer of ownership. No part of the documentation or

information supplied may be divulged to any third party without the express written consent of CalAmp.

CalAmp reserves the right to update its products, software, or documentation without obligation to notify

any individual or entity. Product updates may result in differences between the information provided in this

manual and the product shipped. For access to the most current product documentation and application

notes, visit www.calamp.com.

RF Exposure Compliance Requirements

The ITC 220 Base Station, Locomotive, and Wayside Transceivers are intended for use in the

railroad industry as Interoperable Train Control (ITC) Radio (ITCR), which is an important

component of Positive Train Control (PTC). The ITC 220 Base station, Locomotive, and

Wayside Transceiver units must be professionally installed and must ensure a minimum

separation distance between the antenna or radiating structure and any person. Refer to

Table 1 and 2 on pages 3 and 4 of the RF Energy Exposure Guide for ITC 220 Base Station,

Locomotive, and Wayside Transceivers Installed in Vehicles or at Fixed Sites for

recommended minimum lateral distance, as applicable for the antenna application, type of antenna, and

transmitting power.

Radio Transceiver Model

Antenna application

Section and applicable table

ITC 220 Base Station Transceiver

Fixed installation

Section 6 Fixed Installations; Table 2 on Page 5

ITC 220 Locomotive Transceiver

Mobile installation

Section 4 Mobile Installations; Table 1 on Page 3

ITC 220 Wayside Transceiver

Fixed installation

Section 6 Fixed Installations; Table 2 on Page 5

ITC 220 Wayside Transceiver

Mobile installation

Section 4 Mobile Installations; Table 1 on Page 3

It is the responsibility of the user to guarantee compliance with the FCC MPE regulations when operating this

device in a way other than described above. The installer of this equipment must ensure the antenna is

located or pointed such that it does not emit an RF field in excess of Health Canada limits for the general

population.

ITC 220 Base Station, Locomotive, and Wayside Transceivers use a low power radio frequency transmitter.

The concentrated energy from an antenna may pose a health hazard. People should not be in front of the

antenna when the transmitter is operating.

Recommended safety guidelines for the human exposure to radio frequency electromagnetic energy are

contained in the Canadian Safety Code 6 (available from Health Canada), the Federal Communications

Commission (FCC) Bulletin 65 and the Council of the European Union’s Recommendation of 12 July 1999 on

the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300 GHz) (1999/519/EC).

Any changes or modifications not expressly approved by the party responsible for compliance (in the

country where used) could void the user’s authority to operate the equipment.

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page ii

TABLE OF CONTENTS

1 Overview ......................................................................................................................................... 1

1.1 General Description ............................................................................................................................................... 1

1.2 Operational Characteristics .................................................................................................................................... 2

1.3 Physical Description ............................................................................................................................................... 3

1.3.1 Dimensions ................................................................................................................................................... 3

1.3.2 Connections .................................................................................................................................................. 5

1.4 Related Documents ................................................................................................................................................ 6

2 Follow Established Safety Guidelines ............................................................................................. 7

2.1 Electrical Safety ...................................................................................................................................................... 7

3 Important Information for the User ............................................................................................... 7

3.1 Limiting RF Exposure .............................................................................................................................................. 7

3.2 Fixed Antenna Guidelines ...................................................................................................................................... 8

3.3 RF Interference to Residential Receivers ............................................................................................................... 8

3.4 Equipment Modifications ....................................................................................................................................... 8

4 Wayside Transmitter Operation ..................................................................................................... 9

4.1 Wayside Transceiver Channelization and Frequency Range .................................................................................. 9

4.2 Wayside Channel Restrictions ................................................................................................................................ 9

4.3 Wayside-Radiated Power Limits ............................................................................................................................ 9

5 Routine Maintenance ................................................................................................................... 10

6 Installation .................................................................................................................................... 11

6.1 Required Equipment ............................................................................................................................................ 12

6.2 Unpack and Inspect the Unit ................................................................................................................................ 13

6.3 Confirm SD Memory Card (CIM) is Installed and Seated ..................................................................................... 13

6.4 Mount the Wayside Transceiver .......................................................................................................................... 13

6.5 Ground the Radio Transceiver ............................................................................................................................. 15

6.6 Connect Current-Limiting Circuit Protection ........................................................................................................ 16

6.7 Connect RF Antenna ............................................................................................................................................ 16

6.7.1 Antenna Planning ........................................................................................................................................ 16

6.7.2 Connect Antenna Cable for the Narrowband RF Antenna .......................................................................... 16

6.8 Connect the GPS Antenna .................................................................................................................................... 17

6.9 Connect the Ethernet Cable ................................................................................................................................. 17

6.10 Connect the Power Cable ..................................................................................................................................... 18

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page iii

6.11 Power On the Transceiver .................................................................................................................................... 19

6.11.1 LED Diagnostics ........................................................................................................................................... 19

6.11.2 Review the Power On Self-Test (POST) Results .......................................................................................... 20

6.11.3 Determine and Verify or Set GPS Coordinates ........................................................................................... 21

6.11.4 Verify the Transceiver is Commissioned ..................................................................................................... 21

6.11.5 Verify LAN Ethernet Port is Operational ..................................................................................................... 22

7 Troubleshooting ............................................................................................................................ 23

7.1 Guidelines for Troubleshooting Common Problems ............................................................................................ 23

7.2 Power Problems ................................................................................................................................................... 24

7.3 SD Memory Card Problems .................................................................................................................................. 24

7.4 Antenna Problems................................................................................................................................................ 25

7.5 Transmission Problems ........................................................................................................................................ 26

7.6 Reception Problems ............................................................................................................................................. 27

7.7 Ethernet Connectivity Problems .......................................................................................................................... 27

7.8 RF Link Problems .................................................................................................................................................. 28

APPENDIX A — Abbreviations and Definitions ................................................................................... 30

APPENDIX B — GPS Satellite Constellation Overview and Antenna Planning Considerations .......... 32

B.1 GPS Satellite Constellation Overview ....................................................................................................................... 32

B.2 GPS Antenna Planning Considerations ..................................................................................................................... 33

B.2.1 Minimize Potential of GPS Antenna Issues ........................................................................................................ 34

B.2.2 Determine GPS Coordinates .............................................................................................................................. 34

APPENDIX C — Configure the Computer Ethernet Ports to Communicate with the Transceiver ..... 37

C.1 To Configure the Computer Ethernet 1 Interface for Communication with the Transceiver MAINT Port ............... 38

C.2 To Configure the Computer Ethernet 2 Interface for Communication with the Transceiver LAN Port .................... 41

C.3 Creating an XtermW Connection Profile ................................................................................................................... 43

APPENDIX D — Sample POST Results from a Properly Functioning Wayside Transceiver ................ 45

APPENDIX E — Command Security .................................................................................................... 48

E.1 Log On to the Transceiver ......................................................................................................................................... 48

E.2 Log Off From the Transceiver .................................................................................................................................... 49

E.3 Change Your Transceiver Password .......................................................................................................................... 49

E.3.1 Forget Your Password? ...................................................................................................................................... 50

APPENDIX F — Commonly Used Diagnostic Commands ................................................................... 51

INICHECK ..................................................................................................................................................................... 51

LINKSTAT ..................................................................................................................................................................... 51

REV ............................................................................................................................................................................. 52

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page iv

STAT,RF ....................................................................................................................................................................... 52

STAT,HRX ..................................................................................................................................................................... 53

APPENDIX G — Transceiver Test and Adjustment Procedures .......................................................... 54

G.1 Required Equipment ................................................................................................................................................. 54

G.2 Put a Trace on a Feature ........................................................................................................................................... 54

APPENDIX H — Managing Software Application Images.................................................................... 57

H.1 Determining Software Image Status......................................................................................................................... 57

H.2 Updating Software Images ....................................................................................................................................... 59

H.2.1 Updating Transceiver Software Using the Command Line ................................................................................ 59

H.3 Rolling Back an Image ............................................................................................................................................... 63

H.3.1 How Automatic Rollback Occurs ....................................................................................................................... 63

H.3.2 Determining If Automatic Rollback Occurred ................................................................................................... 63

H.3.3 Rolling Back an Image via the Command Line: APPS ........................................................................................ 64

H.4 Maintaining Multiple Software Images in the Transceiver....................................................................................... 65

H.4.1 Managing Images Via the Command Line: APPS ............................................................................................... 65

H.4.2 System Events On Installed Software Images ................................................................................................... 66

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 1

1 OVERVIEW

This ITC 220 Wayside Transceiver Installation Guide provides important electrical safety and radio-frequency

compliance information, operation and routine maintenance instructions, and installation and troubleshooting

procedures for CalAmp ITC 220 Wayside Transceivers.

This manual provides essential information for personnel who perform the following on the Wayside Transceiver:

Operation and routine maintenance (Chapters 1–5; Appendix A)

Installation and verification of operation Chapters 1–6; Appendices A–D)

Intermediate troubleshooting and verification of configuration settings (Chapters 1–7; Appendices A–H)

Prerequisites for users of this manual who perform the above include:

Ability to work with standard radio-frequency (RF) test equipment, including knowledge of how to prevent personal

injury and equipment damage.

Ability to measure RF power, frequency, and other quantities, and analyze RF performance.

Working knowledge of the XtermW terminal emulation application that is used to configure and install updates in

the radio transceivers.

Familiarity with means to limit RF exposure from antennas and familiarity with the RF Energy Exposure Guide for ITC

220 Base Station, Locomotive, and Wayside Transceivers Installed in Vehicles or at Fixed Sites.

1.1 GENERAL DESCRIPTION

Positive Train Control (PTC) is a technology solution that prevents train-to-train collisions, over-speed derailments,

movement of a train through a switch left in the wrong position, and incursion of trains into maintenance of way work

limits. Interoperable Train Control (ITC) defines industry-standard messaging and communication protocols that

support PTC and ensure interoperability between components.

CalAmp’s line of ITC 220 Radio Transceivers for locomotive, base station, and wayside applications are manufactured

specifically for use by North American Railroads for PTC applications. Operating between 217.6 and 222 MHz, these

multi-channel software-defined radio transceivers meet railroad requirements for ITC and are designed to meet

relevant railroad specifications for operation in the harshest environments. With high power capacity, CalAmp’s ITC

220 Radio Transceivers provide wireless packet data transport between locomotives, base stations, and wayside

locations.

Wayside Transceivers are remote, fixed location radios installed at waysides. They provide wayside signal status, switch

position, and track integrity information to locomotives. They must communicate with locomotives even when there is

no Base radio coverage. Wayside radios also enable wayside sites to communicate with the Back Office for

maintenance and other purposes. Some Wayside radios may have access to the Back Office through a broadband

connection. The Base Station Transceiver, Locomotive Transceiver, and Wayside Transceiver form the transportation

backbone on which a messaging application provides communication capabilities between railroad assets and their

back offices.

Experience the advantage of high performance reliability designed to meet:

AAR Standard S-5702

ANSI/TIA-603-C-2004

MIL-STD-810E

American Recovery and Reinvestment Act – Buy American Provision

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 2

1.2 OPERATIONAL CHARACTERISTICS

ITC 220 Wayside Transceivers are designed to satisfy the industry-standard ITC requirements as part of an integrated

220 MHz radio (ITCR) network supporting the implementation of PTC systems. These Wayside Transceivers are

designed to provide communication in an interoperable fashion enabling messages to occur across railroad boundaries.

All input and output ports are grounded or shielded. Internal shielding is used within the unit assembly and PCB design

minimizes potential sources of unwanted radio emissions.

CalAmp ITC 220 Wayside Transceivers have the following operational characteristics. (Specifications are subject to

change without notice.)

General

Frequency Range: 217.6-222.0 MHz

Channel Spacing: 25 kHz

Temperature Range: Operating: -40°C to +70°C

Storage: -55°C to +85°C

Operating Humidity: 0 - 95% non-condensing

Frequency Stability: +/- 1.5 ppm over operating temperature range

DC Input Voltage Range: 10.9-15.5 VDC; Damage limit 17 VDC

DC Current Drain: Transmit: 10 A (peak) max into 50 ohm load, 7.5 A typical;

Receive: 1 A max. while receiving

DC Power Connector: Wago p/n 231-833/001-000

Size: 15.5 × 9.5 × 2.0 inches.

Weight: < 8 lbs. (3.5 kg)

Antenna Connector: Type N female

GPS Receiver Active or passive antenna; Antenna power 3.3 V 50 mA max.;

Antenna connector: TNC female

External Interface: Two (2) Ethernet:

One (1) data network port, RJ-45;

One (1) maintenance port, RJ-45

Configuration Interface Module (CIM): SD Card

Display: Activity and diagnostic LEDs on front panel

Regulatory: Complies with FCC Parts 2, 15, and 90

Transmitter

RF Power Output: 25 W PEP; adjustable to 7.5-25 W PEP

Output Impedance: 50 ohms; Operating VSWR < 3:1

Modulation Waveforms: 16 kbps pi/4DQPSK (linear);

Occupied Bandwidth: Meets 47CFR90.210 (f), five aggregated channels

Modulation Designators: 16 kbps: 8K90DXW

Conducted Spurious emissions: –25 dBm max.

Max. Duty Cycle Rating: 10 %

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 3

Receiver

Maximum Usable Sensitivity, Static BER<10

-4

: 16 kbps -111 dBm;

32 kbps -108 dBm

Adjacent Channel Selectivity: 70 dB at 25 kHz offset

Spurious Response Rejection: 70 dB

Intermodulation Response Rejection: 65 dB

Blocking (1 MHz offset) 80 dB

Number of Simultaneous Receiver Channels: Two (2): (no diversity support)

One (1) 16 kbps;

One (1) auto 16 kbps/32 kbps

1.3 PHYSICAL DESCRIPTION

The ITC 220 Wayside Transceiver is housed in a rugged die-cast metal chassis for simple installation. Multiple mounting

lugs at top and bottom of the chassis allow for a variety of mounting options, including in 19-inch channel-rack

installations. The unit is designed to operate in an extended temperature range and provide worry-free operation.

1.3.1 DIMENSIONS

Overall dimensions of the ITC 220 Wayside Transceiver are approximately 15.5 in. width × 9.5 in. height × 2.0 in. depth,

as shown in Figure 1 below.

Figure 1 ITC 220 Wayside Transceiver overall dimensions

(Dimensions shown are in inches.)

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 4

The Wayside Transceiver may be mounted vertically or horizontally, providing that the unit is mounted such that the

cooling fins, CIM card door, and cable connections are unobstructed. When mounting the unit, choose an orientation

that provides clear visibility of the status LEDs. Dimensions of mounting lugs for mounting the unit are shown in Figure

2 below. (Dimensions shown are in inches.)

Figure 2 Wayside Transceiver mounting lug dimensions

Spacing of mounting lugs and slotted holes provide versatility for mounting the Wayside Transceiver. Figure 3, which

follows, shows the recommended method of installing the Wayside Transceiver in a typical EIA 19" telecommunications

rack application.

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 5

Figure 3 Wayside Transceiver mounted in a typical EIA 19" rack application

1.3.2 CONNECTIONS

All physical connections and interfaces are located at the bottom (as viewed with the unit mounted vertically) of the

Wayside Transceiver, except the CIM card slot, the door for which is in the right side of the unit (as viewed mounted

vertically).

The following figure and table illustrate the interface connections at the bottom panel of the unit.

Figure 4 Wayside Transceiver bottom panel interface connections

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 6

Table 1 Wayside Transceiver bottom panel interface connections

Interface

Connector Type

Label

TX RX Antenna

Type N female

ANT

DC Power Input*

Wago p/n 231-833/001-000

13.6 VDC

GPS Antenna

TNC female

GPS

Data Network Ethernet

RJ-45

LAN

Maintenance Ethernet

RJ-45

MAINT

CIM socket

SD memory card receptacle

CIM

Ground connection*

Threaded post (stud) for ring lug connection

*This radio requires an external isolated power supply to provide ground isolation between the radio and the site

electronics. Failure to use an isolated power supply (for example, connecting a unit directly to site batteries) would

induce a ground fault at the site since the radio is grounded to the bungalow both through the ground lug as well as

the GPS and 220 GHz RF narrowband antennas.

1.4 RELATED DOCUMENTS

Other documents related to this ITC 220 Wayside Transceiver Installation Guide include:

ITC 220 Base Station Transceiver Installation Guide; CalAmp PN 133991

ITC 220 Locomotive Transceiver Installation Guide; CalAmp PN 133971

RF Energy Exposure Guide for ITC 220 Base Station, Locomotive, and Wayside Transceivers Installed in Vehicles or

at Fixed Sites; CalAmp PN 134069

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 7

2 FOLLOW ESTABLISHED SAFETY GUIDELINES

Your employer has created safety guidelines that apply to your work environment and tasks. Please follow them. If you

have questions about general on-the-job safety concerns, please consult your employer’s established safety guidelines.

2.1 ELECTRICAL SAFETY

To reduce the risk of electric shock:

Follow your employer’s established electrical safety guidelines.

Disconnect power from the transceiver before removing the cover.

Be aware that removing the cover of the radio transceiver may expose you to dangerous voltages or other risks.

Avoid making internal adjustments to the radio transceiver when you are alone.

Avoid contact with a radio’s electrical components. Electric shock from voltages present with the radio transceiver

are potentially fatal.

Reassemble radio transceivers correctly. Incorrect reassembly of a radio transceiver can cause a harmful electric

shock to anyone who handles it.

3 IMPORTANT INFORMATION FOR THE USER

3.1 LIMITING RF EXPOSURE

Caution – Please refer to the RF Energy Exposure Guide for ITC 220 Base Station, Locomotive, and Wayside

Transceivers Installed in Vehicles or at Fixed Sites that is packaged with each Base Station and Locomotive

Transceiver and available online or by request for specific information regarding safe distances that must be

maintained between personnel and energized transmitting antennas.

The information in the RF Energy Exposure Guide for ITC 220 Base Station, Locomotive, and Wayside Transceivers

Installed in Vehicles or at Fixed Sites (RF Energy Exposure Guide) is determined form FCC and Industry Canada rules

that, when followed, limit human exposure to radio frequency energy to acceptable levels. Note that although the

transceiver and antenna are expected to be sited, installed, and maintained only by professionals in a controlled-

exposure environment, the RF Energy Exposure Guide lists the larger lateral safe distances for an uncontrolled

environment. Obeying these limits will protect both railroad employees and the general public.

The Wayside Transceiver is intended to be operated with a fixed antenna in an Occupational/Controlled Exposure

environment per FCC OET 65 or Controlled Use Environment per IC RSS-102. The Maximum Permitted Exposure (MPE)

limit for devices in the presence of the general public in the 100-300 MHz range is 0.2 mW/cm

= 2 W/m

vs. 10 W/m

in a controlled-exposure environment.

This radio transceiver is intended for use by railroad employees who have full knowledge of their exposure and can

exercise control over their exposure to meet FCC and IC limits. This radio device is not intended for use by consumers

or the general population. Base station antennas must be positioned on towers or nonresidential buildings that are

generally unoccupied except while servicing the equipment therein.

Table 2 in Section 6 and Table 1 in Section 4 of the RF Energy Exposure Guide list the calculated lateral distances to be

maintained between the general public and an operational transmitter antenna for antenna types suitable in fixed and

mobile applications.

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 8

Note – RF exposure compliance at multiple transmitter sites must be addressed on a site-by-site basis. It is

the responsibility of the licensee to ensure compliance with maximum exposure limits

3.2 FIXED ANTENNA GUIDELINES

This section contains antenna information and additional notes regarding methods to limit RF exposure.

The licensee is required to comply with limits on antenna location, power, and effective antenna height per 47CFR

Subpart T §90.701 et. Seq., or Industry Canada SRSP-512 §6.3 as applicable. The section titled “Wayside-Radiated

Power Limits,” which follows, provides additional information on how to comply with ERP limits.

Refer to the RF Energy Exposure Guide, which is packaged with each Base Station and Locomotive Transceiver and

available online or by request, for specific guidelines regarding placement and installation of fixed antennas.

Acceptable fixed-antenna types are listed in the Rated Power and Recommended Lateral Distance tables in the RF

Energy Exposure Guide.

Install antennas in accordance with the manufacturer’s instructions.

Disable the transmitter when installing or servicing its antenna or transmission line.

Maintain a safe distance from energized transmitting antennas. Refer to the table of safe distances for Base radios

in the RF Energy Exposure Guide.

Unauthorized antennas, equipment modifications, or attachments could invalidate any equipment warranty or

authority to transmit. Modification could damage the radio transceiver and may violate FCC or IC regulations.

Contact CalAmp before using other antennas.

3.3 RF INTERFERENCE TO RESIDENTIAL RECEIVERS

Notice to user: This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device

does not cause harmful interference.

Note: this equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part

15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a

residential installation. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed

and used in accordance with the instructions, may cause harmful interference to radio communications. However,

there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful

interference to radio or television reception, which can be determined by turning the equipment off and on, the user is

encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.

Increase the separation between the equipment and receiver.

Connect the equipment to an outlet on a circuit different from that to which the receiver is connected.

Consult the dealer or an experienced radio/TV technician for help.

3.4 EQUIPMENT MODIFICATIONS

Caution – Any changes or modifications to this equipment not expressly approved by the party responsible

for compliance (in the respective country of use) could void the user’s authority to operate the equipment.

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 9

4 WAYSIDE TRANSMITTER OPERATION

It is the responsibility of the licensee to operate this radio transmitter in compliance with FCC and Industry Canada

service rules for 220-222 MHz, namely FCC Rules Part 90 Subpart T and Industry Canada SRSP-512.

4.1 WAYSIDE TRANSCEIVER CHANNELIZATION AND FREQUENCY RANGE

The Wayside Transceiver can be configured to transmit on any one of 80 selectable 25 kHz spaced channels ranging

from 220.0125 to 221.9875 MHz inclusive. The spectrum included corresponds to all 5 kHz-wide FCC channels

numbered from 1 at 220.0025 MHz to 400 at 221.9975 MHz. Each Wayside transmission occupies five of the FCC-

defined 5 kHz channels. The lowest radio channel center frequency is in the center of FCC channel 3 and the next is

centered on FCC channel 8, then 13, 18, and so on, up to the highest, which is centered with FCC channel 398.

4.2 WAYSIDE CHANNEL RESTRICTIONS

Section 90.715 of the FCC Rules lists the authorized frequencies of the 400 total 5 kHz wide channels. According to

§90.733(d), these can be aggregated into larger channel widths with the exceptions of FCC channels 161-170 and 181-

185. Therefore, the radio may not transmit on those channels or their 221 MHz counterparts, 361-370 and 381-385.

This corresponds to frequencies 220.8125, 220.8375, 220.9125, 221.8125, 221.8375, and 221.9125 MHz.

Please refer to Part 90 Subpart T and SRSP-512 for additional frequency use restrictions in Canadian and Mexican

border areas.

4.3 WAYSIDE-RADIATED POWER LIMITS

It is the responsibility of the licensee to comply with the effective radiated power limits based on operating

frequency, geographic location, and effective antenna height specified in 47CFR Subpart T §90.701 et. seq.,

or Industry Canada SRSP-512 §6.3, as applicable.

Important: The following supplementary antenna system information discusses means for the licensee to determine

effective radio power (ERP) and to comply with regulatory power limits.

Licensees must comply with specific power vs. HAAT limitations for fixed-base stations unless operating under an

explicit waiver of the applicable rule. U.S. and Canadian power limits differ in this regard.

Licensees should also note that fixed and mobile installations transmitting between 221 and 222 MHz must limit

effective radiated power (ERP) to 50 W or 10log(50) + 30 = 47 dBm PEP referenced to the 2.15 dBi gain of a dipole. The

EIRP for this case is 49.15 dBm. Also note that the maximum ERP on FCC/IC channels 196-200 at 220.975 to 221.000

MHz is 2 watts.

The allowable transmitter peak envelope power (PEP) output in dBm is determined by subtracting the antenna gain in

dBi from 49.15, then adding the loss from the antenna feedline and connectors. If the result is greater than or equal to

44.85 dBm = 14.85 dBW then the maximum power output of the Wayside transmitter can be used. If the value is less

than 44.85 dBm, then the transmitter output power must be reduced to the calculated value.

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 10

Mobile installation: As an example of a mobile installation, consider a vertical half-wave ground plane on a vehicle

metal rooftop. In an ideal installation, the antenna gain = 2.4 dBd = 4.55 dBi. Ignoring connector losses, feedline loss is

at least 0.6 dB for 10 feet of Times Microwave LMR 195 Ultra Flex coaxial cable. Transmitter output power output limit

= 47 – 2.4 + 0.6 = 45.2 dBm PEP and therefore the system is compliant with the 50 W ERP limit. The actual ERP in this

case is 10^(14.85+2.4-0.6) = 46.2 W. This installation is not allowed to transmit on FCC channels 196-200 because the

maximum ERP is greater than 2 watts.

Fixed installation: In a fixed installation, a common single element exposed folded dipole antenna without reflector has

0 up to 2.9 dBd (2.1 to 5.0 dBi) azimuthal gain depending on the design.

Once the allowable ERP is determined by applying all power-restrictive rules from above and the antenna gain is

known, the transmitter peak envelope power output feeding the transmission line is determined by subtracting the

antenna gain in dBi from the EIRP and adding the loss from the antenna feedline and connectors plus the loss from any

external inline power sensors, combiners, filters, or lightning arresters. If the net value is greater than or equal to 44.85

dBm, then the maximum power of the Wayside transmitter can be used. If the value is less than 44.85 dBm, then the

transmitter output power must be reduced to the net value.

Example for the 50 W ERP case: Antenna gain = 2.9 dBd and feedline loss is at least 0.5 dB for 25 feet of Times

Microwave LMR -400 coax plus 0.4 dB for inline lightning arrester and three connectors. Assuming no other losses, the

transmitter power output limit = 47-2.9-0.9 dBm = 45 dBm PEP. In this case, the actual Wayside ERP is 44.85+2.9-0.9

dBm = 46.85 dBm = 48.4 W PEP and therefore the system is compliant with the 50 W ERP limit. This installation is not

allowed to transmit on FCC channels 196-200 because the maximum ERP is greater than 2 watts.

5 ROUTINE MAINTENANCE

The Wayside Transceiver requires the following routine maintenance periodically.

Remove dust and obstructions from heat-sink fins.

Ensure that the unit is not subjected to excessive heat from adjacent equipment.

Make sure that the unit is securely mounted and supported.

Restrain cables to prevent stress on connectors.

Make sure that the SD memory card (CIM) door is securely closed.

Keep the indicator-LED panel dust-free and LEDs viewable.

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 11

6 INSTALLATION

The Wayside Transceiver is housed in a die cast metal enclosure that provides a variety of mounting options, including

EIA 19-inch rack mounting, and weighs less than 8 lbs. (4 kg).

Warning — This radio requires an external isolated power supply to provide ground isolation between the

radio and the site electronics. Failure to use an isolated power supply (for example, connecting a unit directly

to site batteries) would induce a ground fault at the site since the radio is grounded to the bungalow both

through the ground lug as well as the GPS and 220 GHz RF narrowband antennas.

Installation of the Wayside Transceiver consists of these steps:

1. Unpack and inspect the unit (section 6.2).

2. Confirm the SD memory card (CIM) is installed and seated (section 6.3).

3. Mount the unit (section 6.4).

4. Ground the unit (section 6.5).

5. Install current-limiting protection (section 6.6).

6. Connect the narrowband RF antennas (section 6.7).

7. Connect the GPS antenna (section 6.8).

8. Connect the Ethernet cable (section 6.9).

9. Connect the power cable (section 6.10).

10. Power on the unit (section 6.11).

At the conclusion of installation, you will verify that the Wayside Transceiver is operational by doing the following:

1. Observe the operation of the LEDs in the transceiver front panel (section 6.11.1).

2. Review the power on self-test (POST) results (section 6.11.2).

3. Determine and verify or set GPS coordinates (section 6.11.3).

4. Verify the transceiver is commissioned (section 6.11.4).

5. Verify that the LAN Ethernet port is operational (section 6.11.5).

Following sections describe each of the above steps in detail. This guide also contains a brief Troubleshooting chapter

for help with common problems that may occur when installing a Wayside Transceiver.

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 12

6.1 REQUIRED EQUIPMENT

Following is a list of test equipment required to perform all of the tests described in this document. It is expected the

user is familiar with the pieces of test equipment listed below. Instructions on how to use the following equipment are

beyond the scope of this document.

Table 2 Required equipment

Type

Model

Notes

Handheld RF spectrum analyzer

Anritsu or equivalent

Recommended option for 50 VDC, 50 W input

protection of RF signal output port.

Clip-on ammeter

Digital volt meter

Portable power meter

Host computer with at least one

Ethernet port and XtermW or

equivalent terminal program

installed

If the host computer’s Ethernet port has not been

configured, then follow the instructions in APPENDIX

C— Configure the Computer Ethernet Ports to

Communicate with the Transceiver.

Ethernet cable(s)

Category 5 or better

One Ethernet cable for each computer Ethernet port.

Standard Ethernet cable terminated with RJ-45

connectors.

Network analyzer

Portable power meter

Site tester

7/16" and 9/16" wrenches

#2 Phillips head screwdriver

Torque wrench with 65-75 in.·lb.

capacity

Cable ties as required

Crimping tool

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 13

6.2 UNPACK AND INSPECT THE UNIT

Unpack and inspect the Wayside Transceiver. Note any damage that may have resulted from shipping, including dents

or loose parts. Note any damage or discrepancies between the contents in the shipping container and the packing list.

If you detect damage or if the contents do not match the invoice, then note the defect and contact the

manufacturer.

If you do not detect any damage and the shipping invoice matches the contents, then continue with installation.

6.3 CONFIRM SD MEMORY CARD (CIM) IS INSTALLED AND SEATED

Note: The SD memory card must be inserted in the orientation shown on the front panel of the unit.

To confirm the CIM card is installed and seated:

Open the CIM door to ensure the SD memory card is present in the CIM socket.

Push the SD memory card once to release it.

Push the SD memory card again to ensure it is seated in the socket.

Once confirmed, close and secure the CIM door.

Figure 5 CIM card door location and orientation label on Wayside Transceiver

6.4 MOUNT THE WAYSIDE TRANSCEIVER

The Wayside Transceiver is equipped with top and bottom mounting features. It should be mounted vertically for

maximum heat dissipation.

When mounting the Wayside Transceiver, ensure that:

Equipment that produces substantial heat is not installed underneath the Wayside Transceiver.

The areas around the heat-sink fins are not obstructed to allow for proper air flow.

Each Wayside Transceiver is secured with a minimum of two screws at the top and bottom of the unit.

There is adequate clearance to access the SD memory card.

There is adequate clearance for cable connections.

Cables are restrained to prevent kinking and stressing connectors.

ITC 220 Wayside Transceiver Installation Guide PN 133981 Rev. A | Page 14

Figure 6 Vertical mount

Figure 7 19-inch rack mount

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CalAmp ITC 220 Wayside User manual

Brand: CalAmp

Model: ITC 220 Wayside

Type: User manual

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CalAmp ITC 220 Wayside User manual

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